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A neighbour had been alerted ______ the fire by an actuating smoke alarm.

Aby

Bto

Cin

Dat

Answer:

B. to

Read Explanation:

Alert എന്ന വാക്കിന് ശേഷം ഉപയോഗിക്കുന്ന preposition 'to' ആണ്. Eg : You must be alert to the hidden danger. (മറഞ്ഞിരിക്കുന്ന അപകടത്തെക്കുറിച്ച് നിങ്ങൾ ജാഗ്രത പാലിക്കണം.)


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